Driver's Seat Electrical Repair

So two adjustments had never worked, rear height up and lumbar
down and one adjustment had worked intermittently which was backrest recline.
All the archives say the seat switches are the culprit but luck was not on my
side .....

To trouble shoot I ended up hooking the seat up to the
electrical connector in the car with the seat loose and probing around with a
multi-meter.

After a number of false turns the relay pack was at fault, you
could hear the relay click when the switch was pressed but no motor action and
no voltage at the motor.

OK so remove relay pack (much grief) and clean the
connections, put all back together and same symptoms, crap.

Removed the relay body and hooked the seat back up so I could
see the relays and now get a meter to the various connections, seems the relays
operate in pairs but their was a common relay which activated the three
adjustments which didn't work. Getting close now ...

So I get a tooth pick and push the contact on the relay
closed, all three adjustments work, voila or Yeeehahhh or whatever!!! Turns out
the little copper braid which connects the relay arm to the body was impeding
the arm movement. A little adjustment and we are in business.

To have all 12 way adjustment, luxury !!!!!

So before I realised how dumb I was and I could Ohm out the
switch's before I dismantled and found nothing wrong here is the inside of
a switch .......

Underside of the seat and the black box where all the seat
controls interface.

Here is the cheat sheet to tell you where all the connectors
(there are 15) go.

Here is the PCB which is bowed because someone hadn't
assembled the metal support under the seat properly putting
unnecessary pressure on the PCB.

Several joints needed to be resoldered..

Offending relay box is on the left.

Relay box pried out from its home, note the 928 number,
guess you can order one for $$$$$$$

Only way to get the relay housing off is unsolder all the
connections, this is the housing with relay PCB removed.

Relays !!!! Spent time cleaning the contacts with emery
paper.

Here is the offending Relay, arrow points to where the
braided cable was impeding the relay movement, by this time I was so
overjoyed at finding the problem I couldn't focus the bloody camera !!!!!